Consider the following transportation problem:

Source

$1$

$2$

Supply

$1$

$5$

$6$

$100$

$2$

$4$

$2$

$200$

$3$

$3$

$6$

$150$

$4$

$9$

$7$

$50$

Demand

$250$

$200$c$)$ Write$/$type the minimum transportation cost and transportation amounts shipped from sources $4$ to all destinations